Terrorism in all its forms and manifestations and in its scope and intensity of its inhumanity and cruelty has become now one of the most acute and pressing issues of global significance.
Manifestation of terrorism entails massive casualties, destroyed spiritual, material, cultural values, which are impossible to recreate centuries. It breeds hatred and distrust between the social and national groups. Terrorist attacks have led to the need to establish an international system to combat it. For many people, groups, organizations, terrorism has become a way of solving problems: political, religious, national. Terrorism refers to the types of criminal violence, whose victims may be innocent people, anyone who has no relation to the conflict.
The scale and brutality of contemporary terrorism and the necessity of fighting with him above all legal methods, confirms the relevance of the chosen topic.
However, terrorism – a global problem requires constant attention and study, and therefore represents a wide field for research, followed by their practical application.

The aim of this paper is to study and analyze the nature of terrorism, its adverse effects on the development of the international community, the study of the phenomenon of terrorism in international and national conflicts, as well as the current state of the fight against terrorism in the international arena.

Terrorism – is one of the most devastating for the state and society the elements of crime. It has a negative impact on the development of other structural elements of the crime. Terrorism affects not only the political, economic, social, moral, psychological, socio-cultural processes in society.

Modern terrorism has huge financial and economic opportunities are not controlled by either state or society. It has its own system of internal controls and the resilience of nations to achieve political, economic and other purposes. Created combat formations, specific law enforcement agencies are equipped with modern material and technical means. To achieve their goals terrorists use of financial support by putting on stream such criminal activities as the sale of narcotics, arms trafficking, slave trade, etc. Terrorist organizations are able to provide specialists in various spheres of economic and scientific activities.

The object of international crimes are ultimately the international obligations in the sphere of ensuring international peace, security and cooperation of nations and peoples, based on the principles of peaceful coexistence and cooperation, respect for state sovereignty, the right of nations to self-determination. They are united and a high degree of danger to humans, for human civilization.

Act of international terrorism is also perpetrated by individuals or groups of individuals acting independently or as per the instructions of the State, and objectively directed against certain values protected by not only national but also international law.

Act of domestic terrorism is regarded as a serious crime under domestic law of the country – the place of the act.
Act of international terrorism as a crime is assessed not only the criminal law of the state, but also encroaching on international relations, international law.
It should be noted that any terrorist act consists of three elements: the terrorist, his victim (the object of attack) as well as persons who are subject to exposure. The subjects of acts of terrorism are the terrorists single or members of terrorist groups, that is relatively stable associations of individuals who have chosen to achieve their goals and violent terror.

The Law on Combating Terrorism of 1998 defines a terrorist group as a group of persons united in order to carry out terrorist activities and terrorist organization as an organization created to carry out terrorist activities or accepting the possibility of using terrorism in their activities.

References
Geoffrey Nunberg. “Head Games / It All Started with Robespierre / “Terrorism”¯: The history of a very frightening word”¯, 2001.
Ruby, Charles L. “The Definition of Terrorism”¯, 2002.
Robert Mackey. “Can Soldiers Be Victims of Terrorism?”¯, 2009.
Thalif Deen. POLITICS: U.N. Member States Struggle to Define Terrorism, Inter Press Service, 2005.